| Presentation | 2020-10-29 Effort-dependent emergence of uniform and diverse muscle activity features in skilled pitching Tsubasa Hashimoto, Ken Takiyama, Takeshi Miki, Hirohumi Kobayashi, Daiki Nasu, Tetsuya Ijiri, Masumi Kuwata, Makio Kashino, Kimitaka Nakazawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Skilled pitchers show common and individually different motion features. In contrast, common and individually different motion features unclear how these features depend on motion effort. The current study investigates how motion effort affects common and individually different motion features in skilled motions. We measured electromyographic (EMG) activities in pitching motions at three effort levels (i.e., 50%, 80%, and 100% effort), or three levels of fastball velocity. Besides, by utilizing tensor decomposition and principal component analysis, we found two dimensions regarding the effort-dependence in skilled pitching. One dimension separates 50% from the higher effort, while another dimension separates 80% from 100% effort. In the dimension to separate 50% from the higher effort, there were consistent tendencies across the subjects. On the other hand, in the dimension to separate 80% from 100% effort, there were a few consistent tendencies. In sum, we found that the effort dependence of multiple time-varying EMG activity data can be discussed in two-dimensional space. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Baseball pitching / Individual difference / EMG / Effort / Tensor decomposition / Spatial module / Temporal module |
| Paper # | NC2020-17 |
| Date of Issue | 2020-10-22 (NC) |
| Conference Information | |
| Committee | MBE / NC / NLP / CAS |
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| Conference Date | 2020/10/29(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME，NC，CAS，NLP |
| Chair | Takashi Watanabe(Tohoku Univ.) / Kazuyuki Samejima(Tamagawa Univ) / Kiyohisa Natsume(Kyushu Inst. of Tech.) / Yasuhiro Takashima(Univ. of Kitakyushu) |
| Vice Chair | Ryuhei Okuno(Setsunan Univ.) / Rieko Osu(Waseda Univ.) / Takuji Kosaka(Chukyo Univ.) / Hiroki Sato(Sony LSI Design) |
| Secretary | Ryuhei Okuno(Akita-noken) / Rieko Osu(NTT) / Takuji Kosaka(ATR) / Hiroki Sato(Kyushu Inst. of Tech.) |
| Assistant | Akihiro Karashima(Tohoku Inst. of Tech.) / Jun Akazawa(Meiji Univ. of Integrative Medicine) / Ken Takiyama(TUAT) / Nobuhiko Wagatsuma(Toho Univ.) / Toshikaza Samura(Yamaguchi Univ.) / Hideyuki Kato(Oita Univ.) / Motoi Yamaguchi(TECHNOPRO) / Yohei Nakamura(Hitachi) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing / Technical Committee on Nonlinear Problems / Technical Committee on Circuits and Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effort-dependent emergence of uniform and diverse muscle activity features in skilled pitching |
| Sub Title (in English) | |
| Keyword(1) | Baseball pitching |
| Keyword(2) | Individual difference |
| Keyword(3) | EMG |
| Keyword(4) | Effort |
| Keyword(5) | Tensor decomposition |
| Keyword(6) | Spatial module |
| Keyword(7) | Temporal module |
| 1st Author's Name | Tsubasa Hashimoto |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 2nd Author's Name | Ken Takiyama |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| 3rd Author's Name | Takeshi Miki |
| 3rd Author's Affiliation | The University of Tokyo(UTokyo) |
| 4th Author's Name | Hirohumi Kobayashi |
| 4th Author's Affiliation | The University of Tokyo(UTokyo) |
| 5th Author's Name | Daiki Nasu |
| 5th Author's Affiliation | NTT Communication Science Laboratories(NTT) |
| 6th Author's Name | Tetsuya Ijiri |
| 6th Author's Affiliation | The University of Tokyo(UTokyo) |
| 7th Author's Name | Masumi Kuwata |
| 7th Author's Affiliation | The University of Tokyo(UTokyo) |
| 8th Author's Name | Makio Kashino |
| 8th Author's Affiliation | NTT Communication Science Laboratories(NTT) |
| 9th Author's Name | Kimitaka Nakazawa |
| 9th Author's Affiliation | The University of Tokyo(UTokyo) |
| Date | 2020-10-29 |
| Paper # | NC2020-17 |
| Volume (vol) | vol.120 |
| Number (no) | NC-216 |
| Page | pp.pp.44-49(NC), |
| #Pages | 6 |
| Date of Issue | 2020-10-22 (NC) |